Fluid compressor



Jan. 2, 19 J. E. BEHLMER FLUID COMPRESSOR Filed Sept. 8, 1951 3 Sheets-Sheet l Jo/zmiffiehlmer INVENTOR ATTORNEYS Jan. 2, 1934. BEHLMER 1,941,651

FLUID COMPRESSOR Filed Sept. 8, 1931 3 Sheets-Sheet 2 JahnEfleklmer INVENTOR ATTORNIYS Jan. 2, 1934- J BEHLMER 1,941,651

FLUID COMPRES SOR Filed Sept. 8, 1,931 3 Sheets-Sheet 3 Joimlffieklmer ATTORNEYS Patented Jan. 2, 1934 PATENT OFFICE UNITED STATES 1 Claim.

The invention relates to a fluid compressor and more particularly to a rotary fluid compressor or pump.

The primary object of the invention is the provision of a compressor or pump of this character wherein through the eccentric action of a rotor a multiplicity of compression impulses will be had and the intake and exhaust of the fluid is accomplished through the rotor and controlled by valves carried thereby, the intake and exhaust being disposed axially of said rotor, thus assuring maximum compression with a minimum consumption of power.

Another object of the invention is the provision of a compressor or pumpof this'character wherein the moving parts are assembled in a unique manner and by arrangement and construction therecf a high rate of speed may be attained, producing maximum efficiency in operation with minimum consumption and the intake and exhaust valve for the fluid being disposed on opposite sides of the vertical center of an eccentrically movable rotor. eliminates loss of fluid as a perfect seal is had between the points of intake and exhaust.

A further object of the invention is the provision of a compressor or pump of this character, wherein the rotor is eccentrically moved within an outer casing or shell, the latter having outer circular motion, while the intake and exhaust is effected at the axis of the rotor and the valves controlling the intake and exhaust are carried by the movable rotor thereby eliminating the use of external manifolds as the fluid is admitted to the center of said rotor. and also the exhaust. delivered from said center with the result of a balanced action and minimum friction had during the working of the compressor or pump.

A still further object of the invention is the provision of a compressor or pump of this character which is comparatively simple in construction, thoroughly reliable and efficient in its operation, compact with the assembly of a minimum number of parts, and inexpensive to manufacture and install.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described in detail, illustrated in the accompanying drawings, which disclose the preferred embodiment of the invention, and pointed out in the claim hereunto appended.

In the accompanying drawings:

Figure 1 is a vertical transverse sectional view (01. ream-140) through a compressor or pumpconstructed in accordance with the invention.

Figure 2 is a longitudinal sectional view taken approximately on the line 2-2 of Figure 1.

Figure 3 is a horizontal longitudinal sectional view taken approximately on the line 33 of Figure 1.

Figure 4 is a detail disassembled view of one abutment or blade arrangement for the compressor or pump.

Figure 5 is a perspective view of one of the cams or eccentrics of the compressor or pump illustrated in Figures 1 to 3.

Figure 6 is a vertical longitudinal sectional view through a modified form of compressor or Figure '7 is a vertical transverse sectional view thereof.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

Referring to the drawings in detail, particularly Figures 1,.to 5 inclusive, the compressor or pump therein comprises an outer casing or cylindrical body 10 having a bed or base 11 for stationary mounting thereof, this casing or body being formed with a unitary end head 12 and a removable end head 13, both provided with center bearings 14 in which is journaled a hollow power shaft 15, the same being fitted in said bearings with the use of bushings 16. The bearings 14 on the removable end head 13 have tapped therein a cap 1'7 for the open end of the hollow shaft 15 next thereto or confronting the same.

Within the casing or body 10 is a rotating cylinder 18, the same being formed with a unitary end 19 and a removable end 20 to provide a fluid compression chamber 21 therein. The ends 19 and 20 are formed with enlarged hubs 22 centrally thereof, these being journaled in the end heads 12 and 13 of the casing or body 10 and have interfitting therewith bearing balls 23 for free rotation of the cylinder 18. The hubs 22 have their openings of considerably greater diameter than the cross sectional diameter of the shaft 15 and through these openings is passed said shaft.

Carried by the shaft 15 and fixed for rotation therewith is a rotor 24 which works within the fluid chamber 21 in the cylinder 18 and arranged concentrically of the axis of the rotor and working within the same is a series of equidistanced cams or eccentrics 25, each having oppositely journaled ends 26 rotatably fitted in the ends 19 and 20 of the cylinder 18 so that on rotation of the rotor by the shaft 15 the cams or eccentrics 25 will eccentrically move the said rotor with respect to the cylinder 18 and peripherally of the rotor and within the cylinder 18 fluid will be compressed by said rotor.

The shaft has formed therein centrally with respect to the rotor a partition 27 forming at one side thereof the fluid inlet passage 28 and at the other side of this partition the exhaust passage 29, these being constituted by the hollow formation of the shaft 15. The rotor 24 on opposite sides of its center and concentrically of the shaft 15 is provided with intake and exhaust pockets 30 and 31 respectively communicating with the passages 28 and 29 by the ports 32 formed in said shaft 15 removed to opposite sides of the partition 27 therein.

Extending from the pockets 30 and 31 are the fluid leads 33 tothe valved inlet and exhaust openings 34 and 35 respectively formed in the rotor 24 and opening through the periphery thereof and these openings are spaced an equidistance apart and radially disposed to admit and discharge fluid to and from the chamber 21 in the cylinder 18 as will be obvious.

The rotor 24 has formed therein relatively large transverse recesses 36, these being disposed spaced an equidistance apart and open through the periphery of said rotor and opposite ends thereof in which are fitted roll-like oscillating members or rockers 37 which are radially slotted at 38 to accommodate abutments 39, these being in the form of plates or vanes and are coextensive with the length of said members or rockers 3'7 and are swingingly supported upon pivots 40 in pintle sleeves 41 formed at the outer edges of said plates or vanes, the latter being inset in the cylinder 18 with the pivots 40 journaled in the ends 19 and 20 thereof. The plates or vanes 39 swing on the pivots 40 and slidably flt the membersor rockers 3'7 during eccentric movement of the rotor 24 in the cylinder 18. The abutments 39 divide the chamber 21 in the cylinder 18 into a plurality of independent compression spaces during the eccentric movement of the rotor 24 and the revolving of the cylinder 18 within the casing or body 10 and in this manner fluid admitted to these spaces from the inlet passage 28 through the inlet openings 34 will be subjected to separate compression impulses to assure maximum compression with minimum power consumption. It will be noted as each space reaches its maximum capacity and becomes subsequently reduced the fluid contained therein is discharged through the exhaust passage 29 and delivered through port 42 to any point of deposit or place to receive the fluid under compression.

In Figures 6 and 7 there is shown a modification of compressor or pump wherein the rotary cylinder 43 within the casing or body 44 is keyed or otherwise made fast to a shaft 45 while the rotor 46 working within the cylinder 43 is made fast to a hollow shaft 4'7, the latter being out of alignment with the shaft 45 so that the rotor 46 is eccentrically moved within the cylinder 43. This shaft 47- carries a gear 48 meshing with a gear 49 on a countershaft 50 journaled in bearings 51, the latter shaft being also provided with a gear 52 meshing with a gear 53 on the shaft 45 so that power is transmitted from the shaft 45 to the shaft 47 or vice versa, the gears being of a ratio to effect a complete, uniform cycle of movement of the cylinder 43 and rotor 46.

The rotor 46 carries the rockers 54 in which slide the abutments 55 swingingly connected with the cylinder 43. The shaft 47 is of hollow formation havingthe closed inner end 56 and centrally located and longitudinally extended within the shaft is a fluid inlet tube 57 carried in partitions 58, these being spaced apart to provide therebetween an exhaust passage 59 concentrically about the tube 57, the latter at opposite ends communicating with an inlet passage 60 separated from the exhaust passage 59 and fluid is admitted .to the inlet passage through the port 61 while the exhaust from the passage 59 is had through the port 62, these passages 59 and 60 being in communication with separated intake and exhaust pockets 63 and 64 respectively, the leads from these being identical to the leads 33 in the rotor 24 illustrated in Figures 1 to 5 inclusive of the drawings.

It will be apparent that in Figures 6 and 7 of the drawings the compressor or pump has its cylinder 43 driven directly from the shaft 45, while the rotor 46 is driven directly from the shaft 47 which constitutes an inlet and exhaust way for fluid to and from the compressor or pump as specifically defined heretofore.

What is claimed is:-

A fluid compressor comprising a stationary cylindrical body, a rotating cylinder within said body, a power shaft journaled in the body at one side thereof and fixed to the cylinder, hubs formed on the cylinder and journaled in the body, one of said hubs having an open center, a rotor within the cylinder and eccentrically movable therein and having on opposite sides of its center valved intake and exhaust ways leading to and from said cylinder, a combined fluid inlet and exhaust pipe fitted in the body and carried through the centrally open hub into the rotor for communication with the intake and exhaust ways, vanes hinged in the cylinder, and roll-like oscillating rockers journaled concentrically of the rotor and slidably receiving the vanes and located between the intake and exhaust ways.

JOHN E. BEHLNIER. 

